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U.S. Department of Energy
Office of Scientific and Technical Information

Final Supplement to the Environmental Statement Fiscal Year 1975 Proposed Program : Facility Location Evaluation for Maple Valley 500-KV Reinforcement, Study Area 75-14.

Technical Report ·
OSTI ID:5346117
The proposed plan of service consists of the construction of approximately 16 miles of double-circuit 500-kV transmission line. Of this total length 0.5 miles will require new right-of-way easement, 8.25 miles would parallel existing transmission lines, and 7.25 would occur on existing right-of-way. In addition, a new substation will also be required southwest of Snoqualmie, Washington. Construction of the proposed 16-mile transmission line would require approximately 134 acres of new right-of-way easement. About 6.5 miles of the line's length would traverse forested land resulting in the removal of about 105 acres from the production of timber. Construction of the new Snoqualmie Substation would require about 30 acres of land and would remove from 20 to 25 acres of forest land from production. Also expected to occur is the disturbance of game in the immediate vicinity of the facilities during construction, some soil erosion primarily during and immediately after construction, siltation in nearby streams, disturbance of nearby residents from noise and dust during construction, and some degradation of AM reception immediately adjacent to the right-of-way. Removal of one and possible removal of two other residences is unavoidable. The latter towers and removal of screening vegetation will pose a visual impact on residents and travelers using local highways.
Research Organization:
USDOE Bonneville Power Administration, Portland, OR
OSTI ID:
5346117
Report Number(s):
FES-74-62; ON: DE85018179
Country of Publication:
United States
Language:
English